<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script>
			var new = new Date();
			now.setMinutes(now.getMinutes()+3);
			document.cookie = "username=zhangsan";
			document.cookie = "password=123456";
			
			document.cookie = "age=18";
		</script>
	</body>
</html>
